{"id":179706,"date":"2024-11-09T04:07:21","date_gmt":"2024-11-08T20:07:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179706\/"},"modified":"2024-11-09T04:07:22","modified_gmt":"2024-11-08T20:07:22","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%a1%af%e7%a4%ba-100-%e8%a1%8c%e6%95%b8%e6%93%9a%ef%bc%9f-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%af%e7%a4%ba-100-%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179706\/","title":{"rendered":"\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u986f\u793a 100 \u884c\u6578\u64da\uff1f (sql \u6578\u64da\u5eab\u986f\u793a 100 \u884c)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%a1%af%e7%a4%ba-100-%e8%a1%8c%e6%95%b8%e6%93%9a%ef%bc%9f-IfqYoqTrcO\">\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u986f\u793a 100 \u884c\u6578\u64da\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d93\u5e38\u9700\u8981\u5f9e SQL \u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u7279\u5b9a\u6578\u91cf\u7684\u6578\u64da\u884c\u3002\u7121\u8ad6\u662f\u70ba\u4e86\u9032\u884c\u6578\u64da\u5206\u6790\u3001\u5831\u544a\u751f\u6210\uff0c\u9084\u662f\u70ba\u4e86\u7c21\u55ae\u7684\u6578\u64da\u6aa2\u67e5\uff0c\u80fd\u5920\u6709\u6548\u5730\u986f\u793a\u6240\u9700\u7684\u6578\u64da\u884c\u90fd\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u986f\u793a 100 \u884c\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84-sql-%e6%9f%a5%e8%a9%a2%e8%aa%9e%e6%b3%95-IfqYoqTrcO\">\u57fa\u672c\u7684 SQL \u67e5\u8a62\u8a9e\u6cd5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u6700\u57fa\u672c\u7684\u67e5\u8a62\u8a9e\u6cd5\u662f\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u3002\u9019\u500b\u8a9e\u53e5\u7528\u65bc\u5f9e\u6578\u64da\u8868\u4e2d\u9078\u64c7\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u5f9e\u6307\u5b9a\u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u884c\u548c\u6240\u6709\u5217\u7684\u6578\u64da\u3002\u82e5\u8981\u9650\u5236\u986f\u793a\u7684\u884c\u6578\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>LIMIT<\/code> \u5b50\u53e5\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-limit-%e9%a1%af%e7%a4%ba-100-%e8%a1%8c%e6%95%b8%e6%93%9a-IfqYoqTrcO\">\u4f7f\u7528 LIMIT \u986f\u793a 100 \u884c\u6578\u64da<\/h2>\n<p>\u8981\u5728 SQL \u6578\u64da\u5eab\u4e2d\u986f\u793a 100 \u884c\u6578\u64da\uff0c\u53ef\u4ee5\u5728\u67e5\u8a62\u4e2d\u6dfb\u52a0 <code>LIMIT<\/code> \u5b50\u53e5\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d LIMIT 100;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u5f9e\u6307\u5b9a\u7684\u8868\u4e2d\u9078\u64c7\u524d 100 \u884c\u6578\u64da\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>LIMIT<\/code> \u5b50\u53e5\u7684\u884c\u70ba\u53ef\u80fd\u6703\u56e0\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u4e0d\u540c\u800c\u6709\u6240\u5dee\u7570\u3002\u5728 MySQL \u548c PostgreSQL \u4e2d\uff0c\u9019\u7a2e\u7528\u6cd5\u662f\u6709\u6548\u7684\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e9%a1%af%e7%a4%ba%e7%94%a8%e6%88%b6%e6%95%b8%e6%93%9a-IfqYoqTrcO\">\u793a\u4f8b\uff1a\u986f\u793a\u7528\u6236\u6578\u64da<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u7528\u6236\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u5982\u7528\u6236 ID\u3001\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3002\u8981\u986f\u793a\u524d 100 \u884c\u7528\u6236\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM users LIMIT 100;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de <code>users<\/code> \u8868\u4e2d\u7684\u524d 100 \u689d\u8a18\u9304\u3002\u5982\u679c\u9700\u8981\u986f\u793a\u7279\u5b9a\u7684\u5217\uff0c\u4f8b\u5982\u7528\u6236 ID \u548c\u59d3\u540d\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT user_id, name FROM users LIMIT 100;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8-offset-%e9%80%b2%e8%a1%8c%e5%88%86%e9%a0%81-IfqYoqTrcO\">\u4f7f\u7528 OFFSET \u9032\u884c\u5206\u9801<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u986f\u793a\u7279\u5b9a\u7bc4\u570d\u7684\u6578\u64da\u884c\u3002\u4f8b\u5982\uff0c\u986f\u793a\u7b2c 101 \u5230\u7b2c 200 \u884c\u7684\u6578\u64da\u3002\u9019\u6642\u53ef\u4ee5\u7d50\u5408\u4f7f\u7528 <code>LIMIT<\/code> \u548c <code>OFFSET<\/code> \u5b50\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d LIMIT 100 OFFSET 100;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8df3\u904e\u524d 100 \u884c\uff0c\u7136\u5f8c\u986f\u793a\u63a5\u4e0b\u4f86\u7684 100 \u884c\u6578\u64da\u3002\u9019\u5728\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\u986f\u793a\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-IfqYoqTrcO\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u4f7f\u7528 <code>LIMIT<\/code> \u6642\uff0c\u8acb\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u8868\u4e2d\u6709\u8db3\u5920\u7684\u6578\u64da\u884c\uff0c\u5426\u5247\u8fd4\u56de\u7684\u7d50\u679c\u53ef\u80fd\u5c11\u65bc 100 \u884c\u3002<\/li>\n<li>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53ef\u80fd\u5c0d <code>LIMIT<\/code> \u548c <code>OFFSET<\/code> \u7684\u652f\u6301\u6709\u6240\u4e0d\u540c\uff0c\u8acb\u53c3\u8003\u76f8\u61c9\u7684\u6587\u6a94\u4ee5\u7372\u53d6\u8a73\u7d30\u4fe1\u606f\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u8003\u616e\u5230\u6027\u80fd\u554f\u984c\uff0c\u5efa\u8b70\u4f7f\u7528\u7d22\u5f15\u4f86\u52a0\u901f\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IfqYoqTrcO\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL \u6578\u64da\u5eab\u4e2d\u986f\u793a 100 \u884c\u6578\u64da\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u7d50\u5408 <code>LIMIT<\/code> \u5b50\u53e5\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u6578\u64da\u8868\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u6578\u64da\u884c\u3002\u7121\u8ad6\u662f\u9032\u884c\u6578\u64da\u5206\u6790\u9084\u662f\u751f\u6210\u5831\u544a\uff0c\u9019\u7a2e\u6280\u80fd\u90fd\u5c07\u5927\u5927\u63d0\u9ad8\u60a8\u7684\u5de5\u4f5c\u6548\u7387\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 SQL \u6578\u64da\u5eab\u4e2d\u4f7f\u7528\u67e5\u8a62\u8a9e\u53e5\u986f\u793a 100 \u884c\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u8207\u5206\u6790\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-179706","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179706","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=179706"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179706\/revisions"}],"predecessor-version":[{"id":179707,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179706\/revisions\/179707"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}